Iowa · Iowa Code — Motor Vehicles (Ch. 321, 321J)

Iowa Code (Motor Veh.) § 321.434: distanceofnotlessthantwohundredfeet,butnohornorotherwarningdeviceshallemit anunreasonablyloudorharshsoundorawhistle.Thed

What this law says, in plain English

Motor vehicle horn use must maintain at least 200 feet distance, avoid unreasonably loud sounds, and be used only when reasonably necessary for safe operation on highways.

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